subject: Windows Digitizer Class Driver For Touch Screens [print this page] The CP2501 device supports three different serial interfaces for communicating with various touch screen controllers. The interface choice can be selected through the CP250x configuration wizard. The CP2501 device's UART interface consists of the UART_TX (transmit) and UART_RX (receive) data signals and is programmable to support a wide range of data formats and baud rates. The SPI protocol provides access to a flexible, fullduplex synchronous serial bus. SPI operates as a master device in 4wire mode. The optional slaveselect signal can be left floating when connecting to a 3wire SPI device. Additional GPIO pins can be used to select multiple slave devices in master mode. The CP2501 device's SPI interface consists of the SPI_SCLK (clock), SPI_MOSI (master out), SPI_MISO (master in) and SPI_NSS (slave select) signals and is programmable to support a wide range of clock speeds and configurations.
